Amalgamating apparatus



(No Model.)

3 Sheets-Sheet 1. A. D. CLARKE.

AMALGALMATING APPARATUS.

Patented Feb. 21,1882.

(No Model.) Q a Sheets-Sheet 2. A. D. CLARKE.

LMALGAMATING APPARATUS. No. 253,843. Patented Feb. 21,1882.

I 3 Sheets-Sheet 3.

(No Model.)

A. D. CLARKE.

AMALGAMATING APPARATUS.

No. 253,843. Patented Feb. 21,1882. I

N. PEIERS. Phoxo-Luho n her. wahiugton. D. c.

UNITED STATES;

ALEXANDER 1). oLAEKE,

PATENT OFFICE.

OF OMAHA, NEBRASKA.

AMALGAMATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 253,843, dated February 21, 1882.

' Application filed November 22, 1881. (No model.) I I To all whom it may concern:

Be it known that I, ALEXANDER D. CLARKE, of Omaha, Douglas county, State of Nebraska, have invented certain new and useful Improvements in Amalgamating Apparatus, of which the following is a specification.

This invention relates to devices for governing the feed of sand to the blast in that class of amalgamators wherein a blast is employed for carrying the sand to the amalgamating parts of the apparatus.

The accompanying drawings show atFigure 1 a partial side elevation of an amalgamator to whichthe present invention has been applied. Fig. 2 is a cross'section. Fig. 3 is an enlarged detail view of -the wind-gate and hopper-valve actuating devices. Fig. 4 is an enlarged sectional detail, showing the wind-gate; and Fig. 5 is a vertical section of the feedhopper' and its valve.

Similar letters of reference indicate like parts wherever the same are used.

In said drawings, A represents the air-chest, which is charged with air by the blower.

B is the screening apparatus, having a delivery-spout, b,- and O G, the main blast-conducting pipes, which lead into the upright hollow standard 0, upon which latter the amalgamating-boxes shown in my former patents of September 27, 1881, or equivalent devices for the same purpose, are supported.

D is a hollow upright supporting the feedhopper D and receiving a minor portion of the blast through the conducting-tube D the material received by the hopper being carried by the blast through a goose-neck connection (such as is shown in my said patents) to the amalgamating-boxes upon the upright O. I have not thought it necessary to show this goose-neck or the amalgamating-boxes, as they are fully set forth in said patents.

The main blast-conducting pipes O 0, I connect by a cross-pipe, E, at a point between the upright D and the standard (3, and centrally in the top of this cross-pipe E is inserted a vertical cylinder, E, which contains a spring-depressed piston, E This piston is steadied at its upper end by a bearing, 0, standin g'out'from the part D, and-is connected by one or both of the braces e and their right-angled extensions 6 to vertical rods E located one at each side of the part D, and through such rods and said crosspieces and extensions it operates the wind-gate, as presently to be explained, and also the hopper-valve d, which is secured to the extensions 6 of the upper cross-brace, e, and by this latter connection gages the amount of sand fed to the portionof the blast passing through the conductor D and goose-neck D. The lower ends of the rods E are provided with wrist-pins j, which are inserted in slots f in the angle-pieces F, pivoted to standards F, and connected by rods F to the toggles F, by which toggles, through the medium of slotted rods F and the top cross-brace, g, of the windgate G, which is inserted in the conduit D, said gate is opened and closed.- By thus actuating the wind-gate the blast is regulated by the power which is derived from the piston E As will be noticed, the angle-pieces have several openings, by which the rods F may be attached thereto, and that the toggle-pieces are also provided with openings, which permit the length of its members to be changed to suit circumstances.

The nutsf upon the rods permit a variety of adjustment, and if it is desired that the gate shall not respond immediately to the movement of the piston the lower nuts maybe turned down, which will allow the rods to rise to some extent before they begin lifting the gate.

In order that the hopper-valve may work easily, I balance it by counterpoises, which are weighted levers H, fulcrumed at h, and connected to the rods E The operation of the invention is as follows: Air, being admitted to the air-chest from the blower, immediately fills the pipes G G and causes a pressure upon the piston, raising the latter according to the amount of air-pressure. The piston raises the rods E which tip the angle-pieces F upon their, pivots f and actuate the rod I" to lengthen the toggle F and thus to elevate the rods F and soonenor later, according to the adjustment given the nuts f, to elevate the gate also. At the same time the hopper-valve is also raised through the rods E and the braces connecting them with said valve. 7

It will be understood, of course, that the nuts 6 upon the piston and upon said rods E may also be adjusted so that the hopper-valve Pinions with bushings may be placed upon the wrists f to obviate friction.

The springs,by which the piston is depressed, insures the return to the normal position as soon as the blast-pressure ceases.

I claim- 1. In combination with blast-conductingdevices to which and the hopper by which the sand is fed, a wind-gate in the former and a valve in the latter, and devices for actuating the said gate and valve simultaneously or substantially simultaneously, substantially as specified.

2. The combination, with the hopper-valve, of governing mechanism and conduits for conducting the actuating-blast to said mechanism, substantially as specified.

3. The combination, with the wind-gate, of governing mechanism, conduits for conducting the blast to said mechanism, and the devices for conveying motion from the said mechanism to the gate, substantially as specified.

ALEXANDER D. CLARKE.

Witnesses:

T. EVERETT BROWN, H. M. MUNDAY. 

